Secure PBFT Consensus-Based Lightweight Blockchain for Healthcare Application

【Author】 Hegde, Pawan; Maddikunta, Praveen Kumar Reddy

【Source】APPLIED SCIENCES-BASEL

【影响因子】2.838

【Abstract】Recent advancement in IoT technology has boosted the healthcare domain with enormous usage of IoT devices to provide elevated services to patients with chronic disorders on a real-time basis by the incorporation of IoT sensors on patients' bodies. However, providing services ensuring security and maintaining the privacy of patients is a challenging task. Blockchain technology promises security in a distributed environment but popular consensus algorithms such as Proof of Work (PoW) and Proof of Stake (PoS) require huge computational resources and energy by making the IoT environment inefficient. This paper introduces a secure Practical Byzantine Fault Tolerance (PBFT) consensus-based lightweight blockchain algorithm for healthcare applications. To strengthen the PBFT consensus, highly trusted nodes were allowed to participate in the consensus algorithm using the Eigen Trust model and Verifiable Random Function (VRF) to select a random primary node from a group of trusted consensus nodes. The proposed algorithm is tested in a simulated environment and evaluated against the traditional PBFT consensus algorithm considering throughput, latency, and fault tolerance.

【Keywords】IoT; healthcare; blockchain; PBFT (Practical Byzantine Fault Tolerance); security; trust model

【发表时间】2023 MAR

【收录时间】2023-04-12

【文献类型】理论模型

【主题类别】

区块链应用-实体经济-医疗领域